Re: P5149 - Saab 9-5 Bulletin Board - Saabnet.com
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Re: P5149
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Posted by bobc [Email] (#473) [Profile/Gallery] (more from bobc) on Wed, 29 Jul 2020 11:19:05 Share Post by Email
In Reply to: P5149, Ronn, Mon, 27 Jul 2020 15:40:47
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Do you have any other symptoms? Any drivability issues at all? Any other codes?

Have you checked for vacuum leaks? You dont mention the year or miles on the car but the newest OG 9-5 is 11 yrs old. Vacuum leaks in older cars are prevalent and cause all manner of subtle issues.

take a look at the BPC (Boost Pressure Control) aka the BCV (Boost control valve).


https://www.esaabparts.com/saab/parts/55557331

Mine disintegrated and allowed the turbo to overpressurize (it failed to signal the wastegate to open) resulting in the engine hitting fuel cutoff under high load. Of course check that the wastegate rod is connected, it could have become disconnected with similar symptoms.

the vacuum hoses to the BPC are silicone and should be in good condition but check them carefully anyway. If any cracks or splits you could replace them piece by piece or get the OEM replacement:

https://www.esaabparts.com/saab/parts/30581028

_______________________________________ Mine: '08 9⁵ 2.3T SportCombi, Polar White '01 9⁵ Aero Midnight Blue (benched, busted piston) '00 9⁵ Aero Silver (RIP - transmission ) '99 9⁵ Cosmic blue Consult on: '11 9⁵ Aero NG '00 9⁵ Aero Mightnight Blue


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